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Find_My_Vehicle [message #456821]

Tue, 04 October 2011 15:10

robbyke
Messages: 348
Registered: September 2010
Location: Belgium

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How do i get the VehicleGameObj converted to a normal GameObject?

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[Updated on: Wed, 05 October 2011 03:53]

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Re: Find_My_Vehicle [message #456945 is a reply to message #456821]

Wed, 05 October 2011 23:38

snazy2000
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Registered: December 2007

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what do you mean?

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Re: Find_My_Vehicle [message #456960 is a reply to message #456821]

Thu, 06 October 2011 07:10

danpaul88
Messages: 5795
Registered: June 2004
Location: England

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General (5 Stars)

Code: [Select all] [Show/ hide]

VehicleGameObject pVehicleObj = Find_My_Vehicle();
GameObject* pObject = dynamic_cast<GameObject*>(pVehicleObj);

Or...

Code: [Select all] [Show/ hide]

GameObject* pObject = dynamic_cast<GameObject*>(Find_My_Vehicle());

Or...

Code: [Select all] [Show/ hide]

GameObject* pObject = (GameObject*)Find_My_Vehicle();

(PS: If you didn't already figure it out, VehicleGameObject *is* a GameObject, since it's a derived class)

(PPS: Yes, I know dynamic casting a subclass to its superclass is redundant since it's always going to succeed, just illustrating my point Razz

)

http://steamsignature.com/card/1/76561197975867233.png

[Updated on: Thu, 06 October 2011 07:14]

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Re: Find_My_Vehicle [message #457022 is a reply to message #456821]

Thu, 06 October 2011 17:28

robbyke
Messages: 348
Registered: September 2010
Location: Belgium

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ok that works although i dont understand how it works i gues i understand it somehow on some way XD im just a nooby in programmin

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Re: Find_My_Vehicle [message #457045 is a reply to message #456821]

Fri, 07 October 2011 00:27

Omar007
Messages: 1711
Registered: December 2007
Location: Amsterdam

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General (1 Star)

VehicleGameObject is derived from GameObject.
This means VehicleGameObject is everything GameObject is +more.

The code for this would be

Code: [Select all] [Show/ hide]

class VehicleGameObject : public GameObject{...};

*note: In the scripts.dll source, there might be an inheritance in between or multiple inheritance. I did not check this code so it may look a bit different in the real source. This does however reflect how VehicleGameObject is a GameObject

You can ofcourse have this stacked

Code: [Select all] [Show/ hide]

class X{...};

//Y is X +more
class Y : public X{...};

//Z is Y +more
class Z : public Y{...};

As Z derives from Y, and Y from X, Z is also an X.

Or multiple

Code: [Select all] [Show/ hide]

class A{...};
class B{...};

class C : public A, B{...};

C is both an A and B, BUT A is not a B and B is not an A in this case.

http://www.cprogramming.com/tutorial/lesson20.html

Then you also get things like access modifiers and the virtual keyword that all affect inheritance behavior, but you can search that up when you need it Wink